Spectroscopic Classifications of Optical Transients with the Keck I telescope
ATel #14389; M. R. Siebert, K. Taggart, R. J. Foley (UCSC)
on 12 Feb 2021; 18:31 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Kirsty Taggart (k.taggart@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of optical transients from spectroscopic observations with the LRIS spectrograph on the Keck I telescope. Targets were supplied by YSE and ALeRCE (selected from the ZTF data stream). All observations were made on 2021 Feb 12 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
PS20hsv | AT2020uaq | 15:34:49.030 | +10:58:37.34 | 0.115 | IIn | | (1)
ZTF21aajtstm | AT2021cob | 12:30:25.358 | +02:09:06.82 | 0.078 | Iax | -4d | (2)
Notes:
When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. (1) The spectrum has relatively weak H-beta emission with a Lorentzian profile and a FWZI of ~3000 km/s. Classified using LRIS blue side (3200-5600A). (2) We measure an Si II 6355 velocity of -7600 km/s.
